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// Copyright 2014 Google Inc. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package com.google.devtools.build.lib.rules.objc;
import static com.google.devtools.build.lib.rules.objc.ObjcProvider.MERGE_ZIP;
import com.google.common.annotations.VisibleForTesting;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableSet;
import com.google.devtools.build.lib.analysis.RuleConfiguredTarget.Mode;
import com.google.devtools.build.lib.analysis.RuleContext;
import com.google.devtools.build.lib.analysis.config.BuildOptions;
import com.google.devtools.build.lib.packages.Attribute.SplitTransition;
import com.google.devtools.build.lib.rules.objc.ReleaseBundlingSupport.SplitArchTransition;
import com.google.devtools.build.lib.rules.objc.ReleaseBundlingSupport.SplitArchTransition.ConfigurationDistinguisher;
import java.io.Serializable;
/**
* Implementation for {@code ios_extension}.
*/
public class IosExtension extends ReleaseBundlingTargetFactory {
/**
* Transition that when applied to a target generates a configured target for each value in
* {@code --ios_multi_cpus}, such that {@code --ios_cpu} is set to a different one of those values
* in the configured targets.
*
* <p>Also ensures that, no matter whether {@code --ios_multi_cpus} is set, {@code
* --ios_minimum_os} is at least {@code 8.0} as Apple requires this for extensions.
*/
static final SplitTransition<BuildOptions> MINIMUM_OS_AND_SPLIT_ARCH_TRANSITION =
new ExtensionSplitArchTransition();
// Apple only accepts extensions starting at 8.0.
@VisibleForTesting
static final String EXTENSION_MINIMUM_OS_VERSION = "8.0";
public IosExtension() {
super(ReleaseBundlingSupport.EXTENSION_BUNDLE_DIR_FORMAT, XcodeProductType.EXTENSION,
ImmutableSet.of(new Attribute("binary", Mode.SPLIT)), ConfigurationDistinguisher.EXTENSION);
}
@Override
protected String bundleMinimumOsVersion(RuleContext ruleContext) {
return determineMinimumOsVersion(ObjcRuleClasses.objcConfiguration(ruleContext).getMinimumOs());
}
@Override
protected ObjcProvider exposedObjcProvider(RuleContext ruleContext) throws InterruptedException {
// Nest this target's bundle under final IPA
return new ObjcProvider.Builder()
.add(MERGE_ZIP, ruleContext.getImplicitOutputArtifact(ReleaseBundlingSupport.IPA))
.build();
}
private static String determineMinimumOsVersion(String fromFlag) {
if (Double.parseDouble(fromFlag) < Double.parseDouble(EXTENSION_MINIMUM_OS_VERSION)) {
// Extensions are not accepted by Apple below version 8.0. While applications built with a
// minimum iOS version of less than 8.0 may contain extensions in their bundle, the extension
// itself needs to be built with 8.0 or higher. This logic overrides (if necessary) any
// flag-set minimum iOS version for extensions only so that this requirement is not violated.
return EXTENSION_MINIMUM_OS_VERSION;
}
return fromFlag;
}
/**
* Split transition that configures the minimum iOS version in addition to architecture splitting.
*/
private static class ExtensionSplitArchTransition extends SplitArchTransition
implements Serializable {
@Override
protected ImmutableList<BuildOptions> defaultOptions(BuildOptions originalOptions) {
ObjcCommandLineOptions objcOptions = originalOptions.get(ObjcCommandLineOptions.class);
String newMinimumVersion = determineMinimumOsVersion(objcOptions.iosMinimumOs);
if (newMinimumVersion.equals(objcOptions.iosMinimumOs)) {
return ImmutableList.of();
}
BuildOptions splitOptions = originalOptions.clone();
setMinimumOsVersion(splitOptions, newMinimumVersion);
splitOptions.get(ObjcCommandLineOptions.class).configurationDistinguisher =
getConfigurationDistinguisher();
return ImmutableList.of(splitOptions);
}
@Override
protected void setAdditionalOptions(BuildOptions splitOptions, BuildOptions originalOptions) {
String fromFlag = originalOptions.get(ObjcCommandLineOptions.class).iosMinimumOs;
setMinimumOsVersion(splitOptions, determineMinimumOsVersion(fromFlag));
}
@Override
protected ConfigurationDistinguisher getConfigurationDistinguisher() {
return ConfigurationDistinguisher.EXTENSION;
}
private void setMinimumOsVersion(BuildOptions splitOptions, String newMinimumVersion) {
splitOptions.get(ObjcCommandLineOptions.class).iosMinimumOs = newMinimumVersion;
}
}
}
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